the other day we were rebuilding a few zones at a job i did a few years ago after a pool install. My guy was digging the new pipe over to the old valves when he calls me over and shows me the wire he uncovered. At first I thought it was the cable but then we found the other two buried 10". It was the service that the owner just had converted from overhead to buried. best I can tell they didn't want to damage the irrigation pipes so they just hand dug under where all the pipes left the manifold. I was pissed off that someone could be so stupid so I told the customer to call her electrician and tell him he has to fix it or she will call the inspector.